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djverab [1.8K]
3 years ago
12

Jerimy factored 144x^2-25as follows:

Mathematics
1 answer:
SOVA2 [1]3 years ago
4 0
144x^2-25=(12x-5)(12x+5)
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A group of friends went out for dinner and decided to split the cost of the bill equally. If each person contributed $32, the fr
lianna [129]

Answer:

The number of friends that went out for dinner is 8

And their bill is $238

Step-by-step explanation:

Let's assume that the number of friends that went out for dinner to be x

And the bill for the dinner to be y

If each person contributed $32 and paid off the bill,they will have a balance of $18

32x - 18 = y_____equation 1

If each person contributed $35 and paid off the bill and also 15% tip,they will have a balance of $6.30

35x - 6.3 = y + (15% of y)

35x - 6.3 = y + (3y/20)

Open up the bracket

35x - 6.3 =(20y + 3y)/20

700x - 126 = 23y______equation 2

From equation 1,y = 32x - 18

Put the above in equation 2 and we have

700x - 126 = 23(32x -18)

700x - 126 = 736x - 414

collect like terms

36x = 288

x = 288/36

x = 8

Remember that equation 1 says that y = 32x - 18 and we now know that x = 8 .

Substitute and we have

(32 × 8) - 18

y = 238

The number of friends that went out for dinner is 8

And their bill is $238

3 0
2 years ago
Multiply each polynomial <br> (x - 7)(x - 4)
german

Answer:2x+28 100% right

Step-by-step explanation:

8 0
3 years ago
Factor by grouping 20p³+15p²+24p+18​
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(4p +3)(5p2 + 6) is your answer
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Simplify the following expression:<br><br> 48⋅47
xxTIMURxx [149]

Answer:

2256

Step-by-step explanation:

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The sum of 7/8 and 4/9 is closer to 0,1,2,or 3?
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2 because you make them with the same denominators that both go into each other EX: 8x9=72 7/8 now equals 63/72 and 4/9 now equals 28/72 now add them together 63/72 + 28/72= 91/72= 1 19/72
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3 years ago
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